Rounded Atelectasis




Rounded Atelectasis Associated with Mineral Dust Exposure

  • Asbestos Exposure
    • Epidemiology: most common etiology (accounts for 29-86% of cases)
    • Exposures: see Asbestos
    • Clinical: asbestos-related rounded atelectasis usually occurs in the presence of other asbestos-related lung disease (asbestosis) or asbestos-related pleural disease (asbestos pleural plaques), but can occur without other asbestos-related lung or pleural manifestations
  • Silicosis (see Silicosis)
  • Mixed Mineral Dusts

Rounded Atelectasis Associated with Exudative Pleural Effusion

Rounded Atelectasis Associated with Pneumothorax (see Pneumothorax)

  • Intentional Pneumothorax (aka “Collapsotherapy”): plombage (therapeutic collapse of regions of the lung) was previously used to treat tuberculosis
  • Iatrogenic Pneumothorax: due to procedures with inadvertent entry of the pleural space
  • Lymphangioleiomyomatosis (LAM)-Associated Pneumothorax (see Lymphangioleiomyomatosis): case reports of rounded atelectasis occurring in association with pneumothorax and chylothorax
  • Spontaneous Pneumothorax

Rounded Atelectasis in the Absence of Significant Pleural Disease

Clinical Manifestations

Round/Spindle/Ovoid/Wedge-Shaped Lung Lesion


Clinical Features